[ Grammar ]
He has been very interested in doing research on __________ since he was at high school.
A. biology
B. biological
C. biologist
D. biologically

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How much and how manyArticle & PrepositionBasic GrammarPronunciation and VocabularyFuture or PastProgressive TensesPast Tense, Recount Text, and Future TensePast TensesWish / If only ( Present)PassivisationOther quiz:
Future Tenses › ViewHe __________ a famous actor in the future.
A. become
B. becoming
C. will become
D. became
There vs. It › View
The following is correct: I think it is going to be really cold outside tonight. Bring a jacket with you.
A. True
B. False
The teacher tried ……..(encourage) students to work harder.
A. encourage
B. to encourage
C. encouraging
Past Tenses › View
The past perfect simple shows the result of an action completed before another event.
A. TRUE
B. FALSE